GMC 2000 Sierra 1500 Pickup Owner's Manual page 212

4-16
-
3. Pull the push pins and
lower air dam assembly
away from the retainers
until the lower air
dam is free.
When you're back on roads, though, be sure to replace
the air dam.
NOTICE:
Operating your vehicle for extended periods
without the front bumper lower air dam installed
can cause improper air flow to the engine and
may allow things like fog lamps or tow hooks on
the front of your vehicle to be damaged. Always
be sure to replace the front bumper air dam
when you're finished off
-
road driving.
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